Home / 20,483.21-30,715.34-10,629.38

Finding the Fourth Proportional to 20,483.21, 30,715.34 and 10,629.38

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Solution

The fourth proportional to 20,483.21, 30,715.34 and 10,629.38 is: 15,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.21 : 30,715.34 = 10,629.38 : x
  2. Step 2: Convert to fraction form
    20,483.21/30,715.34 = 10,629.38/x
  3. Step 3: Cross multiply
    20,483.21x = 30,715.34 × 10,629.38
  4. Step 4: Simplify right side
    20,483.21x = 326,485,044.33
  5. Step 5: Solve for x
    x = 326,485,044.33/20,483.21
  6. Step 6: Final answer
    x = 15,939.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.